What are two types of nitrogenous bases found in nucleic acids?

Answer 1

You mean purines and pyrimidines??

Nitrogenous bases are split into two different types: the purines (adenine and guanine) and the pyrimidines (thymine, cytosine, and uracil).

A purine will hydrogen-bond to a pyrimidine. Adenine always bonds with thymine (in #"DNA"#) or with uracil (in #"RNA"#) with two hydrogen bonds. Guanine will always bond with cytosine. Note that the bonding can happen vice-versa as well.

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Answer 2

Connor Abernathy

Purines and pyrimidines are the two kinds of nitrogenous bases that are present in nucleic acids.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.